Add 'error' parameter to 'window.onerror' handlers.

Source/bindings/v8/custom/V8ErrorEventCustom.cpp

Index: Source/bindings/v8/custom/V8ErrorEventCustom.cpp
diff --git a/Source/core/page/RuntimeEnabledFeaturesCustom.cpp b/Source/bindings/v8/custom/V8ErrorEventCustom.cpp
similarity index 69%
copy from Source/core/page/RuntimeEnabledFeaturesCustom.cpp
copy to Source/bindings/v8/custom/V8ErrorEventCustom.cpp
index 2ac204d2e28b6eb6e2418ed5e635d890715f6b76..42e36973e7422f56fbff1a79fbffb9dc47619945 100644
--- a/Source/core/page/RuntimeEnabledFeaturesCustom.cpp
+++ b/Source/bindings/v8/custom/V8ErrorEventCustom.cpp
@@ -29,15 +29,32 @@
  */
 
 #include "config.h"
-#include "RuntimeEnabledFeatures.h"
+#include "V8ErrorEvent.h"
 
-#include "core/workers/SharedWorkerRepository.h"
+#include "RuntimeEnabledFeatures.h"
+#include "V8Event.h"
+#include "bindings/v8/DOMWrapperWorld.h"
+#include "bindings/v8/Dictionary.h"
+#include "bindings/v8/ScriptState.h"
+#include "bindings/v8/SerializedScriptValue.h"
+#include "bindings/v8/V8Binding.h"
+#include "bindings/v8/V8DOMWrapper.h"
+#include "bindings/v8/V8HiddenPropertyName.h"
+#include "core/dom/ContextFeatures.h"
+#include "core/page/Frame.h"
 
 namespace WebCore {
 
-bool RuntimeEnabledFeatures::sharedWorkerEnabled()
+void V8ErrorEvent::errorAttrGetterCustom(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    return SharedWorkerRepository::isAvailable();
+    v8::Handle<v8::Value> error = info.Holder()->GetHiddenValue(V8HiddenPropertyName::error());
+
+    if (!error.IsEmpty()) {
+        v8SetReturnValue(info, error);
+        return;
+    }
+
+    v8SetReturnValueNull(info);
 }
 
 } // namespace WebCore